35 MPa车载氢系统减压阀失效仿真研究  

Simulation Study on the Failure of Pressure Reducing Valve in 35 MPa Vehicle Hydrogen System

作　　者：段志洁 封利利 刘宝[1] 王龙[1] DUAN Zhijie;FENG Lili;LIU Bao;WANG Long(Great Wall Motor Co.,Ltd.,Baoding,Hebei 071000,China)

机构地区：[1]长城汽车股份有限公司,河北保定071000

出　　处：《自动化应用》2024年第18期38-40,47,共4页Automation Application

基　　金：国家重点研发计划项目“车载氢系统失效与安全定量评估技术”(2021YFB2501500)。

摘　　要：车载氢系统的安全和稳定对氢能车的正常运行非常重要,一旦其中的部件失效,可能会引发重大的安全事故。减压阀作为车载氢系统的核心部件之一,常常会受氢气的高压或高低温环境的影响而失效,导致无法正常减压,甚至会造成氢气泄漏。要使减压阀能够正常地将氢气减压到指定压力,使燃料电池正常工作,往往需要对其进行高低温环境耐压测试,以确保其结构设计合格。对减压阀进行高低温耦合动力学仿真,以验证其结构设计是否合格,并根据仿真结果提出相关优化结构和预防失效的指导建议。The safety and stability of the onboard hydrogen system are crucial for the normal operation of hydrogen powered vehicles.Once any component fails,it may lead to significant safety accidents.As one of the core components of the on-board hydrogen system,the pressure reducing valve often fails due to the high pressure or high and low temperature environment of hydrogen gas,resulting in the inability to reduce pressure normally and even causing hydrogen gas leakage.To ensure that the pressure reducing valve can properly reduce hydrogen gas to the specified pressure and enable the fuel cell to operate normally,it is often necessary to conduct high and low temperature environmental pressure tests to ensure that its structural design is qualified.Perform high-low temperature coupled dynamic simulation on the pressure reducing valve to verify whether its structural design is qualified,and provide guidance and suggestions for optimizing the structure and preventing failure based on the simulation results.

关 键 词：氢能车 减压阀 车载氢系统 高低温耦合 动力学仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]